Lock



c. wRoBLEwsKl.

LOCK.

APPLICATION FILED .IULY31 |919.

Patented Apr. 27, 17920.

@XMIM/woo @o @Mamma cznsLAw wnBLEwsKr, or annivraroiv,l PENNSYLVANIA.

LOCK.

Specification of Letters Patent.

Patented Apr. 27, 1920.

Application filed July 3, 1919. Serial No. 368,653.

To all whom t may concern Be it known that I, CzEsLAW WRBLEW- SKI, a citizen of Poland, residing at (llen-n lyon, in the county of Luzerne and State of ennsylvania, have invented new and useful Improvements in Locks, of which the following is a specification.

This invention relates to locks and comprehends a construction wherein a spring actuated bolt operates within a casing and adapted to engage one end of a pivoted shackle when inserted through an opening in the casing, a key being provided for threaded engagement with the bolt so that the latter is retracted to an inactive position when the key is turned in one direction. y

The invention aims to provide a lock of the above mentioned character, wherein the bolt and actuating spring therefor are associated with a barrel having threaded engagement with the casing so that the operating parts can be thus readily and. easily removed from the casing as a unit, when repair is necessary, or when it is desired to make use of a new spring.

It is also the object of the invention to utilize the barrel as an adjusting element to regulate the tension of the actuating spring for the bolt.

The nature and advantages of the invention will be better understood when the following detailed description is read in connection with the accompanying drawing, the invention residing in the construction, combination and arrangement of parts as claimed.

In the drawing forming part of this specification, the like numerals of reference indicate similar parts in the several views and wherein Figure 1 is a perspective view of the lock constructed in accordance with my invention.

Fig. 2 is a vertical sectional view showing the bolt engaged with the .pivoted shackle.

Fig. 3 is a similar view showing the key associated with the bolt and the latter retracted to its inactive position.

Fig. 4C is a top plan view.

Fig. 5 is a perspective view of the bolt removed from the casing, together with its associated parts.

Fig. 6 is a vertical sectional view through the barrel.

Fig. 7 is a detail view of the key, the latter being partly in section.

The lock forming the subject matter of` my invention embodies a tubular casing 10 closed at one end and open at the other, the shackle'll being pivoted adjacent the lower end of the casing'and having a curved extremity 12 adapted to be inserted through an opening 13 in the casing 10 for association with the spring actuated bolt 14;.

The bolt 14 is arranged to slide through the bar 15 which is threaded within the casing 10, and of a length approximately half of the length of the casing 10. A coiled spring 16l encircles the bolt 14, the spring having one end bearing against the adjacent end of the barrel 15, while the opposite end of the spring bears against a disk 17 carried by the bolt, whereby the bolt under the iniiuence ofthe spring 16 is normally maintained in `a position to be engaged by the shackle when the latter is inserted through the opening 13. One end of the bolt is beveled as at 18 to facilitate the association thereof with the shackle as will be readily understood. That portion of the bolt 14 that projects within the barrel is threaded as at 19 to accommodate the key 20, which is of tubular formation and interiorly threaded as indicated at 21. The key is introduced into the lock from the lower open end of the casing 10, being received by the barrel 15, and it is obvious that as the key is turned to engage the threaded end of the bolt, the latter is retracted against the tension of the spring 16 to its unlocked position. The shackle 11 may then of course be removed from the casing. Manifestly, by reason of the con` structicn and arrangement disclosed, the barrel 15 may be adjusted in the casing 10 to regulate the tension of the spring 16, and for this purpose as well as for the purpose of removing the barrel from the casing, the exposed end of the barrel is provided with kerfs 22 to accommodate a suitable tool for turning the barrel.

The barrel 15 is slotted at its upper end, the slot being indicated at 24 to receive a cross-pin 23 carried by the bolt 14. The pin 23 holds the bolt against rotation when the key is inserted within the barrel 15 and associated with the bolt for the purpose above stated. In addition to this fact, the pin 23 is associated with the barrel 15 in a manner so that the key 20 may be utilized for removing both the barrel 15 and the the key 20 is turned to retract the bolt toY the limit of its movement in this direction the cross-pin 23 is brought into engagement With the top of the barrel 15 and upon further movement of the key 20 the pin serves to rotate the barrel 15 and the bolt 14 as a unit in a direction to contract these parts from the easing.

What is claimed is A lock comprising a .cylindrioal'casing having a slot adjacent one end7 a shackle pivoted on one side of the casing and adapted to be inserted through said slot, a barrel threaded Within the casing, a spring actuated bolt having a portion together with said spring operating Within the casing above the barrel, and a portion movable Withinl said barrel, said barrel being slotted at its upper end, means adapted for association With said bolt for retracting the latter against the inluence of said spring, and a cross-pin carried by the bolt and positioned Within said slot of the barrel, whereby the bolt is held against turning While being retracted.

In testimony whereof I afix my signature' CZESLAW WVR'BLEVSKI. 

